greedsnake.java

doja平台下的贪吃蛇游戏

package greedSnake;

import com.nttdocomo.ui.Display;
import com.nttdocomo.ui.IApplication;

public class GreedSnake extends IApplication implements Runnable {
	public static final int GRID_WIDTH = 20;

	public static final int GRID_HEIGHT = 24;

	public static final int NODE_SIZE = 10;

	private Grid grid = null;

	private Food food = null;

	private Snake snake = new Snake();;

	private boolean running;

	private int score;

	private int level;

	private int count;

	private int countMove;

	private int timeInterval;

	// ----------------------------------------
	/** Set up game. */
	public void start() {
		reset();

		grid = new Grid(GRID_WIDTH, GRID_HEIGHT, this);

		Display.setCurrent(grid);

		Thread runner = new Thread(this);

		runner.start();

	}

	private void reset() {
		running = false;
		score = 0;
		level = 0;
		count = 0;
		countMove = 6;
		timeInterval = 200;
	}

	/** Runnable interface. */
	public void run() {
		food = grid.addFood();
		grid.addSnake(snake);
		grid.repaint();
		for (;;) {
			if (food == null) {
				food = grid.addFood();
				continue;
			}
			try {
				Thread.sleep(timeInterval);
			} catch (Exception e) {
				break;
			}

			if (!running) {
				snake.move();
				Node head = snake.getHead();
				if (grid.overlapsWith(head) || (snake.ptInSnake(head))) {
					running = true;
					continue;
				}
				if ((head.x == food.getX()) && (head.y == food.getY())) {
					int scoreGet = (10000 - 200 * countMove) / timeInterval;
					score += scoreGet > 0 ? scoreGet : 0;
					countMove = 0;
					snake.eatFood(food);
					grid.reduceFood(food);
					food = null;

					if (++count % 5 == 0) {
						level++;
					}

				} else {
					countMove++;
				}

				grid.repaint();

			} else {
				grid.setGameOver();
				break;
			}
		}

		grid.repaint();

	}

	public int getScore() {
		return score;
	}

	/** Get the current level of the game. */
	public int getLevel() {
		return level;
	}

	/** Key event handler. */
	public void keyPressed(int key) {

		if (key == Display.KEY_SELECT) {
			grid.setGameOver();
		}

		if (key == Display.KEY_LEFT) {
			snake.setDirection(Snake.LEFT);
		}

		if (key == Display.KEY_RIGHT) {
			snake.setDirection(Snake.RIGHT);
		}

		if (key == Display.KEY_DOWN) {
			snake.setDirection(Snake.DOWN);
		}
		if (key == Display.KEY_UP) {
			snake.setDirection(Snake.UP);
		}
	}
}